The rise and fall of trail runs across redrock keeps your body seeking a balance point. Find your equilibrium in Patagonia's stretchiest baselayer, constructed to keep you dry and moving freely during active pursuits. This quick-wicking, quick-drying tee is made with an 84% polyester/16% spandex fabric that provides 50+ UPF sun protection and has Gladiodor odor control for the garment. It rests lightly on the skin, allows a cooling airflow, and wicks perspiration. Offset seams feel smooth under pack straps, and reflective logos on the chest and center-back add visibility to predawn runs.

I bought this shirt specifically for yoga because it's hard to find a shirt that will stay in place, yet wasn't skin tight. This shirt fits that bill, though it does tend to end up moving up when in certain postures (e.g., downward dog).

I purchased a "small" because that's what I wear in every single other Patagonia item. What I got was a stretchy rashguard, but without the loop needed to tie into my boardshorts, which means that they are now completely useless to me. My intended purpose was to have a stretchy, normal fitting shirt for climbing in hot weather. I missed the "slim fit" in the description.

If you size this up one or two sizes, it might be a functional piece of clothing, if you like to show off your nipples. It's not a normal tee with stretch. It's a tight shirt that shows off your nipples, and will ride up your belly while surfing.